: Setting transmission power (TX power) too high can overheat and destroy the final transistors (MOSFETs).
If pushing physical buttons on your microphone or front panel feels too risky or tedious, AnyTone provides dedicated PC programming software for the AT-5555N II.
Disclaimer: Accessing the service menu may void your warranty if modified outside of legal CB frequency limits (depending on your country). Always comply with local transmission laws. The author assumes no responsibility for incorrectly configured parameters leading to radio damage.
: If successful, the display will change to show the service menu items (e.g., beginning with modulation modes or specific channel codes like "FM" or "01"). Service Menu Operations anytone at5555n ii service menu work
: Accurate calibration requires professional RF test equipment like an oscilloscope, frequency counter, and dummy load. How to Enter the Service Menu
The service menu is a repository for intricate, low-level calibration data. It's not designed for casual exploration.
Making changes to the service menu is a serious step. The radio does not reset these parameters to factory defaults through its standard user menu reset, meaning any changes you make are permanent unless you can find and manually revert them. : Setting transmission power (TX power) too high
: There is no factory reset button for the service menu. You must manually record every original value before making changes.
While AnyTone occasionally updates firmware structures, the core alignment registers in the AT-5555N II follow a predictable architecture. Frequency Calibration (FR)
Continuous testing during alignment generates significant heat. Keep transmissions brief to prevent thermal damage to the final amplifiers. Common Service Menu Calibrations Always comply with local transmission laws
: You must write down every single value before making any changes.
The Anytone AT5555N II is a versatile radio that supports both analog and digital modes, offering users a wide range of communication options. However, to fully leverage its capabilities, accessing the service menu is often necessary. This menu allows for deeper adjustments and settings that are not available through the standard user interface.
Wattmeter with PEP function (e.g., Bird 43 or Diawa) + Dummy Load + Oscilloscope (ideal).